I am currently working with SBSFU on the STM32H743ZIT6 series and have implemented several modifications to its core functionality. I would like to clarify the potential impact of these changes:
Modification to SBSFU Functionality
I have altered the default SBSFU behavior by replacing the traditional firmware swapping mechanism with a bank-switching approach to reduce application downtime.- Both Bank 1 and Bank 2 will contain the bootloader and the application.
- Bank selection is managed using the swap option byte.
Relocation of Swap Area
I plan to relocate the swap area from Sector 8 to Sector 15, considering that Bank 2 spans from Sector 0 to Sector 7.- This swap area is used during the decryption process and requires 128 KB of memory.
Clarification Required
I would like to understand whether these modifications—specifically the transition from swapping to bank switching and the relocation of the swap area—will have any impact on the core functionality, integrity, or reliability of SBSFU. Is it recommended to go with different sector for decryption?Thankyou in advance for Response
